Hello all, after several starts where I tested the characters and gameplay, I feel I grasp the mechanics enough to actually play the game correctly. I had wanted to start over but it seems to only let me pick up the game with new characters but the dungeon levels I cleared out are still empty, the doors broken open, etc.

How can I start over fresh?

IIRC, the game always autoloads the lasted save. The "new game" should be in the options menu.